Quarterly report pursuant to Section 13 or 15(d)

Warrants (Schedule Of Unrealized Gain/(Loss) On Fair Value Of Warrants) (Details)

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Warrants (Schedule Of Unrealized Gain/(Loss) On Fair Value Of Warrants) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants $ 242,860 $ (710,065) $ 2,183,714 $ 3,752,131
Expired Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants       64,307
November 2015 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 9,560 5,971 233,713 860,772
November 2015 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants   211 435 2,345
March 2016 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 6,286 (38,943) 153,959 401,092
September 2016 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 28,382 (109,915) 318,464 461,570
June 2017 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 69,660 (178,869) 587,610 922,342
June 2017 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 5,804 (22,518) 62,268 105,822
October 2017 Investor Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants 112,729 (331,671) 744,355 828,906
October 2017 Placement Agent Warrants [Member]        
Class of Warrant or Right [Line Items]        
Unrealized gain (loss) on fair value of warrants $ 10,439 $ (34,331) $ 82,910 $ 104,975